Force git date to the build files

Signed-off-by: Ricardo Zanini <[email protected]>

Dockerfile

@@ -18,6 +18,8 @@
 # Build the manager binary
 FROM docker.io/library/golang:1.21.6 as builder
 
+ARG SOURCE_DATE_EPOCH
+
 WORKDIR /workspace
 # Copy the Go Modules manifests
 COPY go.mod go.mod
@@ -40,7 +42,10 @@ COPY version/ version/
 COPY log/ log/
 
 # Build
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags=-buildid= -a -o manager main.go
+# We force a timestamp to the output to guarantee a reproducible build, once we have BuildKit 0.12, this won't be needed anymore.
+# The workaround to force the date format is because docker cli is expecting an int from this parameter (the timestamp).
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags=-buildid= -a -o manager main.go && \
+    touch -d $(date '+%FT%H:%M:%S' -d @${SOURCE_DATE_EPOCH}) manager
 
 FROM registry.access.redhat.com/ubi9/ubi-micro:9.3-9
 WORKDIR /usr/local/bin

Makefile

@@ -162,11 +162,11 @@ debug: build-4-debug ## Run a controller from your host from binary
 
 .PHONY: docker-build
 docker-build: generate ## Build docker image with the manager.
-	docker build --build-arg SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct) -t ${IMG} .
+	docker build --build-arg SOURCE_DATE_EPOCH="$(shell git log -1 --pretty=%ct)" -t ${IMG} .
 
 .PHONY: podman-build
 podman-build: generate ## Build container image with the manager.
-	podman build --build-arg SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct) -t ${IMG} .
+	podman build --build-arg SOURCE_DATE_EPOCH="$(shell git log -1 --pretty=%ct)" -t ${IMG} .
 
 .PHONY: docker-push
 docker-push: ## Push docker image with the manager.
@@ -186,7 +186,7 @@ docker-buildx: generate ## Build and push docker image for the manager for cross
 	sed -e '1 s/\(^FROM\)/FROM --platform=\$$\{BUILDPLATFORM\}/; t' -e ' 1,// s//FROM --platform=\$$\{BUILDPLATFORM\}/' Dockerfile > Dockerfile.cross
 	- docker buildx create --name project-v3-builder
 	docker buildx use project-v3-builder
-	- docker buildx build --build-arg SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct) --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross
+	- docker buildx build --build-arg SOURCE_DATE_EPOCH=$(shell git log -1 --pretty=%ct) --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross
 	- docker buildx rm project-v3-builder
 	rm Dockerfile.cross
 

modules/org.kie.kogito.app.builder/install.sh

@@ -18,4 +18,4 @@
 set -e
 
 cd /workspace
-CGO_ENABLED=0 GO111MODULE=on go build -a -o manager main.go;
+CGO_ENABLED=0 GO111MODULE=on go build -trimpath -ldflags=-buildid= -a -o manager main.go;

modules/org.kie.kogito.osl.builder.prod/install.sh

@@ -18,5 +18,5 @@
 set -e
 
 cd $REMOTE_SOURCE_DIR/app
-source $CACHITO_ENV_FILE && go build -a -o manager main.go
+source $CACHITO_ENV_FILE && go build -trimpath -ldflags=-buildid= -a -o manager main.go
 mkdir /workspace && cp $REMOTE_SOURCE_DIR/app/manager /workspace